chore(cleanup): drop TEMP cursor probes + clear KWin-leg clippy debt

The KWin/Phase-A/B commits were built but never clippy-checked (that distrobox
had no clippy component), so they left TEMP on-glass probes and lint debt in the
tree. With clippy now runnable (fedora rust 1.96.1 = CI parity):

- drop the `fec424ee`/`8cff30d5` TEMP probes: the `update_cursor_meta` SPA_META
  diagnostic logs (also un-detaches the `// SAFETY:` comment from its `unsafe`
  block → fixes `undocumented_unsafe_blocks`) and the KWin composite-arm probe in
  the encode loop.
- `#[allow(clippy::too_many_arguments)]` on `spawn_pipewire` (8 params since the
  KWin leg added `expect_exact_dims`; mirrors `from_virtual_output`).

clippy `-p pf-capture -p pf-vdisplay -p punktfunk-host --locked --features
nvenc,vulkan-encode -- -D warnings` is now green. (--all-targets additionally
trips a pre-existing env mismatch: the fedora libspa binding lacks
`SPA_VIDEO_TRANSFER_SMPTE2084`, referenced only by a `#[cfg(test)]` guard-test —
not a code issue; CI's pinned pipewire has it.)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/pf-capture/src/linux/mod.rs

@@ -236,6 +236,7 @@ impl PwHandles {
 /// Spawn the PipeWire consumer thread for `node_id` (fd `Some` = portal remote, `None` =
 /// default daemon) and return its [`PwHandles`]. `preferred` seeds the format negotiation's
 /// default size/framerate — for Mutter virtual monitors this is what actually sizes the monitor.
+#[allow(clippy::too_many_arguments)]
 fn spawn_pipewire(
     fd: Option<OwnedFd>,
     node_id: u32,
@@ -1443,19 +1444,8 @@ mod pipewire {
         // that SIGSEGVs inside the PipeWire `.process` callback (a segfault `catch_unwind` cannot
         // catch). Every offset below is validated against `region_size` with checked arithmetic,
         // mirroring the fd-length guard the main frame path already applies to xdg-desktop-portal-wlr.
-        // TEMP M2b on-glass probe (DROP BEFORE MERGE): the journal must show whether the
-        // compositor delivers SPA_META_Cursor at all, what it reports, and whether a bitmap is
-        // ever accepted — the cursor pipeline is otherwise blind end-to-end. Statics are fine for
-        // the single bring-up stream; every log is rate-limited or edge-triggered.
-        use std::sync::atomic::{AtomicU64, Ordering as ProbeOrd};
-        static PROBE_NULL: AtomicU64 = AtomicU64::new(0);
-        static PROBE_META: AtomicU64 = AtomicU64::new(0);
         let meta = unsafe { spa::sys::spa_buffer_find_meta(spa_buf, spa::sys::SPA_META_Cursor) };
         if meta.is_null() {
-            let n = PROBE_NULL.fetch_add(1, ProbeOrd::Relaxed) + 1;
-            if n.is_power_of_two() {
-                tracing::info!(n, "cursor meta probe: buffer carries NO SPA_META_Cursor");
-            }
             return;
         }
         // SAFETY: `meta` is non-null and points into the held buffer's metadata array.
@@ -1475,21 +1465,6 @@ mod pipewire {
                 (*cur).bitmap_offset,
             )
         };
-        // TEMP M2b probe (see above): what the meta reports, every 64th + the first few.
-        let n = PROBE_META.fetch_add(1, ProbeOrd::Relaxed) + 1;
-        if n <= 4 || n % 64 == 1 {
-            tracing::info!(
-                n,
-                id,
-                pos_x,
-                pos_y,
-                hot_x,
-                hot_y,
-                bmp_off,
-                region_size,
-                "cursor meta probe: SPA_META_Cursor arrived"
-            );
-        }
         if id == 0 {
             // SPA contract: id 0 = "no cursor information", NOT "cursor hidden". Mutter only
             // REWRITES a buffer's meta region when the cursor changed, so recycled buffers
@@ -1573,14 +1548,6 @@ mod pipewire {
         cursor.bw = bw;
         cursor.bh = bh;
         cursor.serial = cursor.serial.wrapping_add(1);
-        // TEMP M2b probe (see above): bitmap accepted — once per shape change by construction.
-        tracing::info!(
-            bw,
-            bh,
-            vfmt,
-            serial = cursor.serial,
-            "cursor meta probe: bitmap cached"
-        );
     }
 
     /// Destination channel byte offsets (R,G,B) and bytes-per-pixel for a packed-RGB `PixelFormat`,

crates/pf-inject/src/inject/linux/libei.rs

@@ -763,7 +763,9 @@ impl EiState {
                         // raw client pixels as the last resort.
                         let nx = (ev.x as f32 / w).clamp(0.0, 1.0);
                         let ny = (ev.y as f32 / h).clamp(0.0, 1.0);
-                        let (x, y) = match region_for_mode(slot.regions(), w, h).filter(|r| sane_region(r)) {
+                        let (x, y) = match region_for_mode(slot.regions(), w, h)
+                            .filter(|r| sane_region(r))
+                        {
                             Some(region) => (
                                 region.x as f32 + nx * region.width as f32,
                                 region.y as f32 + ny * region.height as f32,
@@ -846,7 +848,9 @@ impl EiState {
                         let nx = (ev.x as f32 / w).clamp(0.0, 1.0);
                         let ny = (ev.y as f32 / h).clamp(0.0, 1.0);
                         // Same region-selection + degenerate fallback ladder as MouseMoveAbs.
-                        let (x, y) = match region_for_mode(slot.regions(), w, h).filter(|r| sane_region(r)) {
+                        let (x, y) = match region_for_mode(slot.regions(), w, h)
+                            .filter(|r| sane_region(r))
+                        {
                             Some(region) => (
                                 region.x as f32 + nx * region.width as f32,
                                 region.y as f32 + ny * region.height as f32,

crates/punktfunk-host/src/native/stream.rs

@@ -2110,34 +2110,6 @@ pub(super) fn virtual_stream(ctx: SessionContext, prepared: Option<PreparedDispl
                 if let Some(live) = capturer.cursor() {
                     frame.cursor = Some(live);
                 }
-                // TEMP KWin composite probe (DROP BEFORE MERGE): what the composite arm actually
-                // hands the encoder — on-glass the blend module loads yet nothing draws, so the
-                // open question is whether an overlay reaches the frame at all.
-                #[cfg(not(target_os = "windows"))]
-                {
-                    use std::sync::atomic::{AtomicU64, Ordering as ProbeOrd};
-                    static PROBE_COMPOSITE: AtomicU64 = AtomicU64::new(0);
-                    let n = PROBE_COMPOSITE.fetch_add(1, ProbeOrd::Relaxed) + 1;
-                    if n == 1 || n % 512 == 0 {
-                        match frame.cursor.as_ref() {
-                            Some(c) => tracing::info!(
-                                n,
-                                x = c.x,
-                                y = c.y,
-                                w = c.w,
-                                h = c.h,
-                                visible = c.visible,
-                                serial = c.serial,
-                                "composite probe: overlay riding to the encoder"
-                            ),
-                            None => tracing::info!(
-                                n,
-                                "composite probe: NO overlay on the frame (capturer.cursor() None \
-                                 and no frame-attached overlay)"
-                            ),
-                        }
-                    }
-                }
             }
         } else if gamescope_composite {
             // gamescope (Phase C): no channel, host always composites. Refresh the (repeat or new)